I strongly, strongly recommend that you purchase anything that goes in your body or in your pets from a different source. Costco's web store carries a lot of p

I strongly, strongly recommend that you purchase anything that goes in your body or in your pets from a different source. Costco's web store carries a lot of pet products/medicines (flea/tick, cosequin, etc) at very solid pricing, and even if there is a cost difference, it's kinda just the cost of peace of mind. Is it worth $5 extra to know that you're not feeding your pet melamine or something else that will just kill them? I acknowledge there are some obscure supplements/etc that are difficult to source from third parties but.. a lot, you can.